封闭式地下停车库环境中污染物及烟雾的排放系统设计研究

Design of Pollutant and Smoke Emission System in Closed Underground Parking Garage

依据换气次数与单车排风量两种方法对排风量进行计算;火灾时的排烟风机整体排烟量应该依据换气次数大于等于6次/小时进行计算;送风量通常是排风量的80%至85%。在火灾发生过程中的补风量要大于等于排烟量的50%;在具备机械防排烟系统的车库,各防烟区建筑面积最好不要超过2000平方米;通过风机、管道和排风排烟口等均共同使用,实现防烟和排风合用系统构建。在工程实例中使用了所建系统,展示出了该系统具有综合性强的特性。

Among them,the exhaust air volume is calculated according to two methods of air exchange frequency and bicycle exhaust air volume.The overall exhaust gas volume of the exhaust fan should be calculated according to the number of air exchanges greater than or equal to 6 times/hour.The air supply volume is usually 80%to 85%of the exhaust air volume.In the fire process,the amount of replenishment should be greater than or equal to 50%of the smoke exhaustion;in garages with mechanical smoke control systems,the construction area of each smoke control area should preferably not exceed 2,000 square meters through fans,pipes and exhaust vents.The cigarette mouths and the like are all used together to realize the construction of the smoke prevention and exhaust system.The built system was used in the engineering example,demonstrating the system's comprehensive and strong features.